Trip gin pole



Nov. 20, 1962 H. M. BEATTY 3,064,324

TRIP GIN POLE Filed Jan. 2, 1959 I 2 Sheets-Sheet 1 H. M. BEATTY TRIP GIN POLE Nov. 20, 1962 2 Sheets-Sheet 2 Filed Jan. 2, 1959 INVENTOR /,9 ev xv. 55/7775,

I WW" ATTORNEY5 3,964,324 TRTP GllN PULE Harve M. Beatty, 405 Central Ave., Clinton, Tenn. Filed Jan. 2, 1959, Ser. No. 784,729 14 Claims. (Cl. 212-61) This invention relates to improvements in trip gin poles, and more particularly to the mounting thereof on power line poles for performing heavy rigging, such as installing cross arms and fixtures, holding transmission lines, etc.

Various attempts have been made heretofore to provide for the attachment of gin poles and other hoisting provisions on power line poles, but these have not been satisfactory for universal application, for secure fastening to the power line poles or for proper adjustment of the gin poles with respect thereto.

One object of this invention is to overcome the objections encountered heretofore in devices of this character and to improve the construction thereof.

Another object of the invention is to provide for attachment, securely and effectively, of a base or mounting structure on a power line pole for supporting a gin pole or arm in desired adjusted positions with respect thereto.

Still another object of the invention is to provide a footing or base that may be attached and secured readily to a power line pole for receiving and supporting an arm mounting, which latter has the supporting arm adjustably connected therewith for swinging movement to different positions, according to the object to be supported thereby.

These objects may be accomplished, according to certain embodiments of the invention, by providing a base structure or footing which is capable of secure attachment to a side of a power line pole. An arm footing is detachably and adjustably connected with the base member or pole footing, and the arm footing, in turn, received and adjustably mounts the base portion of the gin pole arm, capable of adjustment with respect thereto.

This embodiment is illustrated in the accompanying drawings, in which:

PEG. 1 is a side elevation of the gin pole structure applied to a power line pole;

FIG. 2 is a similar view at right angles thereto;

FIG. 3 is a detail side elevation, showing the base of the gin pole arm and one form of arm fitting;

P26. 4 is a disassembled perspective view of those same parts, but with a modified form of arm footing;

FIG. 5 is a disassembled perspective view of the base structure or pole footing and its connected parts;

FIG. 6 is .a similar view from the opposite side;

FIG. 7 is a cross section through the base of the gin pole arm, with the guide pulley in one position; and

HG. 8 is a similar view, showing the guide pulley in another position.

Referring to FIGS. 1 and 2, a power line pole is generally indicated by the numeral 1, and this pole is usually provided with one or more cross arms for supporting the transmission lines, which cross arms are usually located at the top thereof. One of these cross arms is illustrated in FIG. 4 by the numeral 2, as will be described more in detail. The gin pole structure is capable of being secured to the power line pole 1 above or below the cross arm thereon and may be applied directly to the cross arm itself in a manner hereinafter to be described.

A pole footing or base structure is indicated generally at 3 in FIGS. 5 and 6, which comprises a box-like housing with front and back plates 4 and 5, separated from each other by connecting webs 6 which are spaced apart to form the box-like housing structure. This structure is open at the top and bottom and, in the form illustrated in the drawings, it is provided with an upright cylindrical bearing portion 7 having slots 8 on opposite sides thereof 3,%4,8Z4 Patented Nov. 20, 1962 just inside the respective back plates 4 and 5 and extending transversely between the interconnected webs 6.

The back plate 5 is adapted to be placed against the cylindrical surface of the power line pole 1 and this plate 5 has an ear 9 at its upper edge, perforated to receive a lag screw or nail 10 that is initially inserted into a side of the pole l as a temporary support for the base structure or footing on the side of the pole.

The upper and lower edges of the back plate 5 is provided also with backturned flanges 11 thereon, which are notched out, as indicated at 12, so as to conform substantially to the convex periphery of the power line pole 1. Ribs 13 extend between the upper and lower edge flanges 11 at opposite ends of the notched portions 12 coacting therewith to form a concave seat for the power line pole. Additional embracing arms are shown at 14, which may be used if desired, and may be formed either in rigid relation to the ribs 13 or hinged thereto so as to conform readily to various contours of the power line pole.

This base structure or pole footing, generally indicated at 3, should be secured rigidly to the side of the power line pole 1 by detachable fastening means. I have shown and prefer to use, for this purpose, slings generally indicated at 15, one of which is illustrated at each of the upper and lower ends of the footing 3. Each sling 15 is formed of a length of chain 16 having means, such as a detachable hook 17, intermediate the length thereof for taking up the chain, so that it will conform generally to the circumference of the power line pole. At its opposite ends, each length of chain 16 is provided with lashing screws 18 that are threaded to receive nuts 19 for anchoring the lashing screws to the footing 3. The plates 4- and 5 are provided with openings 20 therein, through which the adjacent ends of the slings 15 extend, with the lashing screws 18 protruding through the openings 26 in the plate 4 and receiving the nuts 19 on the ends of the screws in bearing relation against the outer face of the plate 4. Thus, upon tightening of the nuts, the slings 15 can be secured rigidly around the power line pole.

Supported upon the pole footing 3 is an arm footing, generally indicated at 21. The arm footing 21 comprises a U-shaped saddle 22 adapted to receive therein the base of the arm of the gin pole. The footing is adapted to be mounted on the pole footing 3 in any suitable or desired manner and preferably is detachable and adjust able with respect thereto. In the form shown in FIG. 3, the arm footing 21 is provided with a cylindrical depending section 23 projecting downward from the saddle 22 and of a size and shape to conform substantially to the cylindrical section 7, to be received therein and to rotate about an upright axis with respect thereto.

If preferred, the saddle 22 of the arm footing 21 may be provided with a pair of depending side members 23 spaced apart so as to be inserted into the slots 8 of the pole footing 3 capable of detachable engagement in the slots. In this modified form, as shown in FIG. 4, the arm footing 21 can be removed from the pole footing 3 and applied to one of the cross arms 2, so as to support the arm from the latter, if desired. Keyhole slots 24 are provided in the side members 23 in positions to receive locking pins 25 which may be inserted under the cross arm 2 for anchoring the arm footing 21 thereto. Each of the pins 25 is provided with a knob 26 thereon which will pass through the corresponding keyhole slots 24, after which the pin 25 may be turned so as to lock the pin effectively in place against accidental removal.

While the form of arm footing shown in FIG. 3 is capable of swivelling with respect to the pole footing 3, the form of arm footing 21 shown in FIG. 4 will be held against swivelling action either on the pole footing 3 or on the cross arm 2. Nevertheless, this form of arm footing is capable of removal and detachment, either from the pole footing 3 or from the cross arm 2 when applied thereto. ..Wh n it is in place, it will be retained effectively for supporting the arm of the gin pole. 'This armris mountedina base, generally indicated at 27 and shown in FIGS. 4, 7 and 8. The base 27 is formed of a cylindrical section 28 having opposite end portionsof a size to fit openings 29 in the opposite sides of the saddle 22, so as to be jonrnaled therein. Locking plates 30 bisect the cylindrical section 28 to abut against the outer faces of the opposite sides of the saddle 22, as will be apparent from FIGS. 1 and 2. These opposite sides of the saddle 28, as well as the plates 30, are provided with rows of perforations 31 to receive therethrough a locking pin 32 so as to lock the arm base in a desired angular position with respect to the arm footin 21. 1

Extending axially through the plates 39 and in the section 23 is a pulley shaft 33 which is capable of axial sliding movement With respect to the arm base 27. On one end, the shaft 33 is provided with a pulley 34 journaled on the shaft. Interposed between the pulley 34 and the adjacent plate 30 is a coiled compression spring 35, tending to move the shaft 33 toward the left, as viewed in FIGS. 7 and 8. At the opposite end of the shaft 33 is formed a locking lug 36 spaced inward from the end of the shaft 33 and from which a cotter pin 37 extends through the end of the shaft. The openings in the plates 30 are formed as keyhole slots, so as to permit "passage of the lug 36 therethrough and, when properly aligned with the adjacent keyhole slot in the plate 30,

the lug can move from the position shown in FIG. 7 to the position shown in FIG. 8, thereby allowing axial movement of the shaft 33 with respect to the base section 28, disposing the pulley 34 externally of this base section,

. or confining'it within the base section, as shown in FIG.

7,' if the use of a pulley is not required.

Bisecting the base section 28 on the base 27 is a socket member 38 in position to receive therein the arm 39 of the gin pole, which arm is of suflicient length to support the parts and'suspension cable in desired positions. The

outerend of the arm 39 has a'suitable fitting 40 mounted thereon and from which the cables and taclde, generally indicated at 41 are suspended.

The pulley 34 is used when it is desired to keep the pulley rope or fall line parallel and in close proximity to the power line pole 1, as will be apparent from FIG.

2. The fall line is kept near the pole so that the lineman or groundrnan can exert more pull on the line without getting off balance. This serves also to keep the rope generally in a fixed relation to the power line pole for easy access by the lineman and prevents the rope from draggingon wires, poles or cross arms.

- The manner of use of this trip gin pole will be apparent from the foregoing description. that the pole footing is first applied to the pole 1, being It will be evident thepole footing and with respect to the pole 1. For .many operations, the tackle blocks and cables 41 are used, and preferably the cables extend over the pulley 34, although this is not essential in all operations.

Depending somewhat upon the circumstances of use,

the arm footing21 can be removed from the pole footing 3 and mounted on one of the cross arms 2, as illustrated generally in. FIG. 4, if the form of arm footing shown in FIG. 4 be employed. In that event, the. arm footing 21 is anchored securely by the locking pins 25 to the cross armZ, so as to support the arm 39 in laterally disposed relation with respect to the cross arm, rather than as extending outwardly from the power line pole.

Suitable adjustments may be made of the several parts as will be evident. The gin pole is capable of wide latitudes of use and the parts may be applied and used in difierent environments, according to-requirements.

The structure is simple and inexpensive to construct, light in weight and yet sturdy in providing the needed support orholding actionrequired. j g

While the invention has been'illustrated and described in'certain embodiments, it'is recognized that other variations and changes may be made therein without departing from the invention as set forth in the claims.

I claim: V V l. A trip gin pole comprising a pole footing adapted to be applied to an upright member, means for securing the pole footing to the side of said member, said pole footing having an upright socket therein, an arm footing mounted on the pole footing and having means for engaging in the socket for detachably holding the arm footing in place with respect to thepole footing, said arm footing including a substantially U-shaped saddle, said saddle having upstanding ears, an arm base mounted in ing a substantially U-shaped saddle, an arm base mounted in the saddle for turning movement about a substantially horizontal axis relative thereto, an arm rigidly secured to the arm base, and means for locking the arm base selectively in adjusted positions with respect to the saddle.

3. A trip in pole comprising a pole footing adapted to be applied to an upright member, means for securing the pole footing to said member, said pole footing having an upright sockettherein, an arm footing mounted on the pole footing and having means forengaging in the socket for detachably holding the arm footing in place with respect to the pole fo'oting, said arm footing including a substantially U-shapedsaddle, an arm base mounted in thesaddle for turning movement about a substantially horizontal axis relative thereto, an arm rigidly secured to the arm base, and pin and slot means interconnecting the saddle and the arm base for adjustably locking the arm base selectively in different positions with respect to the pole footing. a

4. A trip gin pole comprising a pole footing adapted to be applied to an upright member, means for securing the pole footing to said member, said pole footing having an upright socket therein, an arm footing mounted on the pole footing and having means for engaging in the socket for detachably. holding the arm footing in place with respect to the pole footing, said arm footing comprising a substantially U-shaped saddle having side members, a

-cylindrical arm base journaled in the side members for swivelling movement with respect to the arm footing, an arm rigidly secured to the arm base and supported thereby, and means for adjustably locking the arm base in place against turning movement with respect to the arm footing.

5. A trip gin pole comprising a pole footing adapted to be applied to an upright member, means for securing the pole footing to said member, said pole footing having an upright socket itherein, an arm footing mounted on the pole footing and having means for engaging in the socket for detachably holding the arm footing in place with respect to the pole footing, an arm base mounted on' the arm footing for swivelling movements about a substantially horizontal axis, an arm rigidly secured to the arm base, and cable guide means supported by a shaft journaled in the arm base substantially on the axis of turning movement thereof with respect to the arm footmg.

6. A trip gin pole comprising a pole footing adapted to be applied to an upright member, means for securing the pole footing to said member, said pole footing hav ing an upright socket therein, an arm footing mounted on the pole footing and having means for engaging in the socket for detachably holding the arm footing in place with respect to the pole footing, an arm base mounted on the arm footing for swivelling movements about a substantially horizontal axis, an arm mounted on the arm base, cable guide means supported by the arm base substantially on the axis of turning movement thereof With respect to the arm footing and means mounting the cable guide means for movements to extended and retracted positions with respect to the arm base.

7. A trip gin pole comprising an arm footing, said footing including spaced side members adapted to be mounted in embracing relation on a supporting structure, an arm base mounted on the footing for swivelling movements with respect thereto about a substantially horizontal axis, an arm rigidly secured to the base, and means for locking the arm base selectively in adjusted positions with respect to the footing.

8. A trip gin pole comprising a pole footing adapted to be applied to a support, said pole footing having an upright cylindrical socket therein, and having pockets on opposite sides of the socket adapted to receive selectively in the socket or pockets an arm footing for supporting an arm thereon.

9. A trip gin pole comprising a pole footing adapted to be applied to a support, said pole footing having an upright cylindrical socket therein, and having pockets on opposite sides of the socket, an arm footing having a depending cylindrical section journaled in the socket and vertically removable therefrom for replacement with an arm footing having members engaging in the pockets.

10. In a trip gin pole, an arm footing comprising a substantially U-shaped saddle having depending spaced side members so arranged as to be secured to a support, said saddle having upstanding ears, an arm base interposed between the upstanding ears and having cylindrical portions on opposite sides thereof telescoped in the ears and journaling the arm base on the saddle, and an arm rigidly secured to the arm base and extending upwardly therefrom.

11. In a trip gin pole, an arm footing adapted to be mounted on a support, an arm base mounted on the arm footing for swivelling movement about a substantially horizontal axis and adapted to support an arm thereon, cable guide means supported by the arm base substantially on the axis of turning movement thereof with respect to the arm footing, and means mounting the cable guide means for movement to extended and retracted positions with respect to the arm base.

12. In a trip gin pole, an arm footing adapted to be mounted on a support, an arm base mounted on the arm footing for swivelling movement about a substantially horizontal axis and adapted to support an arm thereon, cable guide means supported by the arm base substantially on the axis of turning movement thereof with respect to the arm footing, means mounting the cable guide means for movement to extended and retracted positions with respect to the arm base, said mounting means including a shaft, spring means connected with the shaft normally tending to urge the shaft in one direction, and means fixing the shaft in one position with respect to the arm base.

13. In a trip gin pole, a pole footing comprising a back plate having outturned flanges thereon with notched edges in position to fit against an upright pole, a front plate spaced from the back plate, connecting webs secured therebetween to form a box having an open top and bottom, an upright cylinder secured within the box, transverse webs secured between the connecting webs and spaced from the front plate and back plate, and flexible devices connected with the front plate and extending therefrom for embracing relation with the pole to secure the pole footing to the latter.

14. In a trip gin pole, a pole footing comprising a back plate having outturned flanges thereon with notched edges in position to fit against an upright pole, a front plate spaced from the back plate, connecting webs secured therebetween to form a box having an open top and bottom, means in the box for mounting an arm, wing plates extending outwardly from the back plate in position to engage the pole, and flexible devices connected with the pole footing and extending therefrom for embracing relation with the pole to secure the pole footing to the latter.

References Cited in the file of this patent UNITED STATES PATENTS 663,121 Frost Dec. 4, 1900 1,247,706 Moran Nov. 27, 1917 2,025,284 Huot Dec. 24, 1935 2,508,974 Soditch May 23, 1950 2,697,776 Wale Dec. 21, 1954 2,833,423 Tucker n May 6, 1958 

